summaryrefslogtreecommitdiff
path: root/arch/x86/mm/pageattr.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-05-26 15:06:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-05-26 15:06:12 -0700
commitcd86a536c81e9300d984327517548ca0652eebf9 (patch)
treea9c197a9f9bb4f615b0fe19134f40ccc77ff8dd8 /arch/x86/mm/pageattr.c
parentebd4c994d2f917dffec882e7a77c28c6b28758ac (diff)
parent2171787be2e71ff71159857bfeb21398b61eb615 (diff)
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: avoid back to back on_each_cpu in cpa_flush_array x86, relocs: ignore R_386_NONE in kernel relocation entries
Diffstat (limited to 'arch/x86/mm/pageattr.c')
-rw-r--r--arch/x86/mm/pageattr.c17
1 files changed, 3 insertions, 14 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 0f9052bcec4b..e17efed088c5 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -204,30 +204,19 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
}
}
-static void wbinvd_local(void *unused)
-{
- wbinvd();
-}
-
static void cpa_flush_array(unsigned long *start, int numpages, int cache,
int in_flags, struct page **pages)
{
unsigned int i, level;
+ unsigned long do_wbinvd = cache && numpages >= 1024; /* 4M threshold */
BUG_ON(irqs_disabled());
- on_each_cpu(__cpa_flush_range, NULL, 1);
+ on_each_cpu(__cpa_flush_all, (void *) do_wbinvd, 1);
- if (!cache)
+ if (!cache || do_wbinvd)
return;
- /* 4M threshold */
- if (numpages >= 1024) {
- if (boot_cpu_data.x86 >= 4)
- on_each_cpu(wbinvd_local, NULL, 1);
-
- return;
- }
/*
* We only need to flush on one CPU,
* clflush is a MESI-coherent instruction that